January weather forecast
Le Roy, IL

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Weather in January

January, like December, is a freezing cold winter month in Le Roy, Illinois, with an average temperature ranging between max 31.3°F (-0.4°C) and min 19.6°F (-6.9°C).

Temperature

With average high temperatures of 31.3°F (-0.4°C) and lows of 19.6°F (-6.9°C), January is the coldest month.

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Le Roy, during January, the rain falls for 5.8 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, in Le Roy, Illinois, there are 139 rainfall days, and 20.83" (529mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Le Roy are January through April, November and December. The month with the most snowfall in Le Roy is January, when snow falls for 9.8 days and typically aggregates up to 2.8" (71mm) of snow.

Daylight

In Le Roy, Illinois, the average length of the day in January is 9h and 41min.
On the first day of the month, sunrise is at 7:17 am and sunset at 4:39 pm. On the last day of January, sunrise is at 7:05 am and sunset at 5:11 pm CST.

Sunshine

The month with the least sunshine in Le Roy is January, with an average of 3.9h of sunshine.

UV index

The months with the lowest UV index in Le Roy are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.
Note: A daily maximum UV index of 2 in January translates into the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What is the coldest month in Le Roy?

The coldest time of the year in Le Roy, Illinois, is January, with temperatures averaging a high of 31.3°F (-0.4°C) and a low of 19.6°F (-6.9°C).

How cold is January in Le Roy?

The high-temperature, in January, in Le Roy, is 31.3°F (-0.4°C), while the low-temperature averages to 19.6°F (-6.9°C).

What is the average humidity in January in Le Roy?

In January, the average relative humidity in Le Roy, Illinois, is 81%.

How much does it rain in Le Roy in January?

In January, in Le Roy, Illinois, the rain falls for 5.8 days. Throughout January, 1.18" (30mm) of precipitation is accumulated.

What is the snowiest month in Le Roy?

The month with the most snowfall in Le Roy, Illinois, is January, when snow falls for 9.8 days and typically aggregates up to 2.8" (71mm) of snow.

How much does it snow in Le Roy in January?

In Le Roy, during January, snow falls for 9.8 days and regularly aggregates up to 2.8" (71mm) of snow.

What is the average length of the day in January in Le Roy?

In Le Roy, Illinois, the average day length in January is 9h and 41min.

When is the sunrise / sunset in January in Le Roy?

On the first day of January in Le Roy, sunrise is at 7:17 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:11 pm CST.

What is the month with the least sunshine in Le Roy?

With an average of 3.9h of sunshine, January has the least sunshine of the year in Le Roy, Illinois.

How long on average sun shines in January in Le Roy?

In Le Roy, Illinois, the average sunshine duration in January is 3.9h.

What is the month with the lowest UV index in Le Roy?

The months with the lowest UV index in Le Roy are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Le Roy?

In Le Roy, Illinois, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
36.9°F 2.7°C
31.3°F -0.4°C
35.8°F 2.1°C
Average low temperature
26.6°F -3°C
19.6°F -6.9°C
23°F -5°C
Average pressure
30.12" 765mmHg
30.14" 766mmHg
30.11" 765mmHg
Average wind speed
10.4mph 16.7km/h
11mph 17.7km/h
10.9mph 17.5km/h
Average max. wind speed
11.1mph 17.9km/h
11.7mph 18.8km/h
11.5mph 18.5km/h
Average wind speed gusts
16.2mph 26.1km/h
16.9mph 27.2km/h
16.7mph 26.9km/h
Average humidity
80%
81%
80%
Average rainfall
1.1" 28mm
1.18" 30mm
1.14" 29mm
Average rainfall days
7.5
5.8
5.9
Average snowfall
1.42" 36mm
2.8" 71mm
2.56" 65mm
Average snowfall days
5.9
9.8
6.7
Average daylight
9h 2min
9h 4min
10h 4min
Average sunshine
4h 2min
3h 5min
4h 1min
Average sunshine days
18.8
16.6
16.8
Average UV index
2
2
2
Average cloud cover
54%
58%
56%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Le Roy, IL

Average temperature in January - Le Roy, IL
  • Average high temperature in January: 31.3°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in January: 19.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in January
Le Roy, IL

Average pressure in January - Le Roy, IL
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in January
Le Roy, IL

Average wind speed in January - Le Roy, IL
  • Average wind speed in January: 11mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in January
Le Roy, IL

Average humidity in January - Le Roy, IL
  • Average humidity in January: 81%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in January
Le Roy, IL

Average rainfall in January - Le Roy, IL
  • Average rainfall in January: 1.18"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is December (1.1").

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Average rainfall days in January
Le Roy, IL

Average rainfall days in January - Le Roy, IL
  • Average rainfall days in January: 5.8 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in January
Le Roy, IL

Average snowfall in January - Le Roy, IL
  • Average snowfall in January: 2.8"

The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Le Roy, IL

Average snowfall days in January - Le Roy, IL
  • Average snowfall days in January: 9.8 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Le Roy, IL

Average daylight in January / Average sunshine in January - Le Roy, IL
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in January
Le Roy, IL

Average sunshine days in January - Le Roy, IL
  • Average sunshine days in January: 16.6 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in January
Le Roy, IL

Average UV index in January - Le Roy, IL
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Le Roy, IL

Average cloud cover in January - Le Roy, IL
  • Average cloud cover in January: 58

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in January
Le Roy, IL

Average visibility in January - Le Roy, IL
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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Le Roy, Illinois, USA

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